Finding the Fourth Proportional to 1,624.42, 2,242.00 and 961.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,624.42 : 2,242.00 = 961.61 : x
2. Step 2: Convert to fraction form
   1,624.42/2,242.00 = 961.61/x
3. Step 3: Cross multiply
   1,624.42x = 2,242.00 × 961.61
4. Step 4: Simplify right side
   1,624.42x = 2,155,914.20
5. Step 5: Solve for x
   x = 2,155,914.20/1,624.42
6. Step 6: Final answer
   x = 1,327.19